datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,12 0:30:00,27 ,       0,99.17262,5.614029,19.13379
sgpcmbeC1.c1,2004,12 1:30:00,26 ,       0, 109.488,8.893592,27.49014
sgpcmbeC1.c1,2004,12 2:30:00,25 ,       0, 4.86677, 1.24731,1.010158
sgpcmbeC1.c1,2004,12 3:30:00,26 ,       0,2.503137,1.182088,0.738811
sgpcmbeC1.c1,2004,12 4:30:00,26 ,       0, 3.03465,1.351791,0.892751
sgpcmbeC1.c1,2004,12 5:30:00,26 ,       0,6.577471,1.348678,1.305232
sgpcmbeC1.c1,2004,12 6:30:00,25 ,       0,  9.9944,1.665119, 2.02843
sgpcmbeC1.c1,2004,12 7:30:00,24 ,       0,12.68281,1.735473, 2.76717
sgpcmbeC1.c1,2004,12 8:30:00,25 ,       0,10.70687,1.423878,2.335649
sgpcmbeC1.c1,2004,12 9:30:00,27 ,       0,2.805037,0.906788,0.794075
sgpcmbeC1.c1,2004,1210:30:00,26 ,       0,2.689767,1.052801,0.872003
sgpcmbeC1.c1,2004,1211:30:00,28 ,       0,65.72598,3.518867,12.23325
sgpcmbeC1.c1,2004,1212:30:00,28 ,       0,8.569243,1.705697,1.854295
sgpcmbeC1.c1,2004,1213:30:00,29 ,       0,164.4551,6.893992,30.31426
sgpcmbeC1.c1,2004,1214:30:00,27 ,       0,3.390355, 1.15737,0.819438
sgpcmbeC1.c1,2004,1215:30:00,27 ,       0,2.742828,1.319677,0.898148
sgpcmbeC1.c1,2004,1216:30:00,27 ,       0,4.413938,  1.4614,1.016626
sgpcmbeC1.c1,2004,1217:30:00,27 ,       0, 5.45328,1.550635,1.088307
sgpcmbeC1.c1,2004,1218:30:00,27 ,       0, 2.61181,1.439405,0.719098
sgpcmbeC1.c1,2004,1219:30:00,27 ,       0, 7.91148,1.656349,1.413221
sgpcmbeC1.c1,2004,1220:30:00,27 ,       0,13.57736,1.912019,2.464756
sgpcmbeC1.c1,2004,1221:30:00,28 ,       0,140.0326, 7.69471,26.50472
sgpcmbeC1.c1,2004,1222:30:00,27 ,       0,13.76596,2.223995,3.119557
sgpcmbeC1.c1,2004,1223:30:00,27 ,       0,27.14465, 2.23741,5.031209